I Became a Mafia in the Academy - Chapter 45

What happens when a fanfic author with a habit of lying and scheming suddenly finds himself as a self insert during Duelist Kingdom? What happens when you have Yugi, Joey, Kaiba, and the rest encounter someone who knows all about every major player in their saga... and sees no problem with abusing said knowledge? Chaos, dear reader. Sweet, sweet chaos

The world had started doomsday, and I struggled for a year, before I died under an enchanted beast’s claw. Heaven has given me another chance, back a day before the end happen. Will I be able to change my fate, and that of my loved ones? Now, I will start my journey on becoming the strongest on the planet that the Gods have changed into a game world.

- Description from Novelupdates

I was nothing—just a broke delivery guy sleeping in a parking garage.My girlfriend dumped me. My boss fired me. My so-called friends laughed as I begged for scraps.Then, the Wealth Domination System awakened.[System Activated: Task—Crush Your Rival. Reward: $10,000. Unlock Bonus: VIP Investment Access.]From petty change to penthouses… from street rat to CEO… I began my ruthless climb.Now, the girl who left me wants back. The billionaire who mocked me begs for partnership. And every deal I touch turns to gold.But wealth has its price—and so does revenge.I won’t stop until I own everything they denied me.This is my rise. This is domination.

Ryo Tanaka, a struggling college student, works tirelessly at multiple part-time jobs to make ends meet. In a bid to earn some extra cash, he volunteers for a paid drug research study, unaware that it will alter the course of his life forever.The experiment takes a disastrous turn, leaving Ryo bedridden with a high fever for several days. But when he finally awakens, he finds himself in a world plunged into chaos. A deadly virus has ravaged the city, turning its inhabitants into ravenous, flesh-eating zombies. Streets once bustling with life now lay desolate, the remnants of civilization crumbling under the weight of the apocalypse.